I had a chance to check out the EOS-M with the 22mm, 18-55 EF-M zoom, and the EF Mount adapter with a 24-70 II. It handles fine with the 22 prime but for a longtime DSLR user, it felt awkward to zoom manually without a viewfinder. I know it's not for me; shooting through the LCD display makes composition harder and I had quite a bit more handshake holding the camera away from my face.